Finding If A Record Exists In Either Of Two Tables
Mar 17, 2008
Hello,
I have two tables with the same field layout, and they both have the same field as the Primary Key. They just contain different data. I would like to know if a record exists in one, or both, tables.
The tables are InvTemp1 and SalesTemp1. The key for both is stock_number.
Here is the command so far:
SELECT COUNT(*)
FROM InvTemp1 INNER JOIN SalesTemp1 ON InvTemp1.Stock_number = SalesTemp1.Stock_number
WHERE (InvTemp1.Stock_number = '101053')
Thank you for any ideas,
Tom
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May 21, 2006
Hello,I have a TextBox and an Insert Button, it works like this: protected void Button1_Click(object sender, EventArgs e) { String strConn=SqlDataSource1.ConnectionString; SqlCommand cmd = new SqlCommand("INSERT INTO My_Table_1 (Column_1) VALUES ("+TextBox1.Text+")", new SqlConnection(strConn)); cmd.Connection.Open(); cmd.ExecuteNonQuery(); cmd.Connection.Close(); } But, what code i must write for checking, if the value i am trying to insert already exists ??I mean something like this:if (TextBox1.Text does not Exists on any Record in My_Table_1) then Insert itelse Show Message : "Already exists a record with this value"Thank you SO MUCH, guys,Carlos.
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Apr 26, 2007
I have, say 4 rows for 1 client I want to find the date difference between two(or more) of the rows when the first has a true flag and the next does not
Row1 Date1,falseRow2 Date2,trueRow3 Date3,falseRow4 Date4,false
so I want to find the difference between Row2 Date2 and Row3 Date4I know I can loop through the rows but with 000's of clients each with x numbers of rows this will surely be very slow
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Jul 20, 2005
I have a table as follows:- user_id (key)- user_email_address (text)- user_request_date (text)- user_sent_date (time/date)An automated macro will run every 5 minutes and needs to run a SQL UPDATEthat:- finds the FIRST (ONE ROW ONLY) (youngest) record where- user_request_date is the most recent- AND user_sent_date is NULL (i.e. blank)- THEN UPDATES the user_sent_date for THAT record to NOW() (i.e. thecurrent system date/time)For example:- record 33 - request_date 01-JUL-03 14:55:03 - user_sent_date = NULL- record 34 - request_date 01-JUL-03 15:03:46 - user_sent_date = NULL- record 35 - request_date 01-JUL-03 16:08:08 - user_sent_date = NULL- record 36 - request_date 01-JUL-03 16:57:31 - user_sent_date = NULL- record 37 - request_date 01-JUL-03 17:11:41 - user_sent_date = NULLSO - the above NEEDED SQL UPDATE would update ONLY row 33 (the FIRST ROW)- update record 33 - with NOW() time and dateTHEN record 34, then 35, then 36, then 37ONE ROW at a time per each SQL UPDATEAny ideas!?Thanks!Richardrichard @ rcbuchanan . com
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Jul 25, 2006
Hi,
I need some help on generating a set of results from few tables. T1 has CHKID , ChkDate, DriverID
oneDriverID can have more than 1 check. how can I find the last check ID of the drivers.
Any help is appriciated.
Thanks,
-VJ
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Feb 1, 2007
Hello,I created the following SQL script to check if a record exists:IF (EXISTS (SELECT LevelName FROM dbo.by27_Levels WHERE LOWER(@LevelName) = LOWER(LevelName))) Return (1)ELSE Return (0)And I also found in a web page another solution:IF EXISTS(SELECT 1 FROM TABLENAME WHERE LevelName=@LevelName) SELECT 1ELSE SELECT 0- Which approach should I use?- Why "SELECT 1 FROM"?- And when should I use SELECT or RETURN?All I need is to know if the record exists ... nothing else.I will use this procedure on an ASP.NET 2.0 / C# web site.I am not sure if this important but anyway ...Thank You,Miguel
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Dec 24, 2007
Hi,
I was wondering if someone can help.
In vb.net what is the best way to check if a record exists if you are using an sql data reader?
For my application I need to display a button control (make it visible on the page) if a record is available after executing my sql select statement.
cheers
Mark :)
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Oct 6, 2003
Hello folks,
I am new to msSQL and ASP, I need some help writing an SQL statement that will first check to see if a combination or record exists, if none found thant it will add it. I am working a section of a site that adds favorites to the database. Each user can have more that one favorite hence it has to check for that unique combination of the fields, UserID and FavID
My Code:
Dim objConnection, objRecordset, strSQL
Dim strFavID, strUserID
strFavID = request.Form("favid")
strUserID = request.Form("userid")
Set objConnection = Server.CreateObject("ADODB.Connection")
Set objRecordset = Server.CreateObject("ADODB.Recordset")
objConnection.Open Application("ConnectionString")
strSQL = "INSERT INTO FAV (UserID,FavID) (SELECT DISTINCT " & strUserID & " AS UserID " & _
strFavID & " AS FavID" & " FROM FAV)" & _
" WHERE " & strUserID & " & " & strFavID & " NOT IN (SELECT UserID, FavID FROM FAV)"
response.Write(strSQL)
'response.End()
If strFavID <> "" Then
On Error Resume Next
objConnection.Execute(strSQL)
objConnection.Close
Set objConnection = Nothing
End If
This code is giving me a syntax error, how do I write the correct statement. I am using MS Access 2k
Thanks for your help
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Jun 21, 2004
/*if key values exist don't insert new record*/
SELECT
/*if exists don't insert*/
CASE
WHEN ISNULL(gradeId, -1) = -1 THEN
INSERT INTO tblScores
(gtStudentId, assignmentId, score)
VALUES (@nStudent, @nAssignment, 0)
END
FROM tblScores
WHERE gtStudentId = @nStudent AND assignmentId = @nAssignment
tblScores has two fields comprising its primary key (gtStudentId, assignmentId) and the gradeId field is a required filed in this table.
I'm getting syntax errors when I click check syntax (near keywords insert from and end).
one other note: this CASE END is nested inside a BEGIN END loop, is this the problem? Is the 'End" of the 'Case' closing the 'End' of the 'Begin'?
thanks
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Feb 14, 2007
I can't seem to get this work. I'm using SQL2005
I want to check if a record exists before entering it. I just can't figure out how to check it before hand.
Thanks in advance. Protected Sub BTNCreateProdIDandName_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BTNCreateProdIDandName.Click
' Define data objects
Dim conn As SqlConnection
Dim comm As SqlCommand
' Reads the connection string from Web.config
Dim connectionString As String = ConfigurationManager.ConnectionStrings("HbAdminMaintenance").ConnectionString
' Initialize connection
conn = New SqlConnection(connectionString)
' Check to see if the record exists
If
comm = New SqlCommand("EXISTS (SELECT (BuilderID, OptionNO FROM optionlist WHERE (BuilderID = @BuilderID) AND (OptionNO = @OptionNO)", conn)
Then
'if the record is exists display this message.
LBerror.Text = "This item already exists in your Option List."
Else
'If the record does not exist, add it. FYI - This part works fine by itself.
comm = New SqlCommand("INSERT INTO [OptionList] ([BuilderID], [OptionNO], [OptionName]) VALUES (@BuilderID, @OptionNO, @OptionName)", conn)
comm.Parameters.Add("@BuilderID", System.Data.SqlDbType.Int)
comm.Parameters("@BuilderID").Value = LBBuilderID.Text
comm.Parameters.Add("@OptionNO", System.Data.SqlDbType.NVarChar)
comm.Parameters("@OptionNO").Value = DDLProdID.SelectedItem.Value
comm.Parameters.Add("@OptionName", System.Data.SqlDbType.NVarChar)
comm.Parameters("@OptionName").Value = DDLProdname.SelectedItem.Value
LBerror.Text = DDLProdname.SelectedItem.Value & " was added to your Option List."
Try
'open connection
conn.Open()
'execute
comm.ExecuteNonQuery()
Catch
'Display error message
LBerror.Text = "There was an error adding this Option. Please try again."
Finally
'close connection
conn.Close()
End Try
End If
End Sub
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Sep 19, 2007
I've got two tables, one containing a list of company names(approx 10,000 records), the other containing a list of company employees (approx 30,000 records) joined by the CompanyID column.
I have a third table (approx 700 records) containing new employees to be added to the employee table. Each record in this table has the employees details plus the name of their company.
I want to write a query that will check each row in the third table to see if
a) the employee exists in the Employees table
b) the company exists in the Companies table and
c) the employee is listed under the correct company
The query should also handle any combination of the above. So if the company doesn't exist but the employee does, create the company on the companies table and update the appropriate record on the employees table with the new CompanyID etc. etc.
Oh, forgot to mention. The company names in the third table won't be exactly the same as the ones in the Company table so will need to use CharIndex.
Anybody got any ideas?
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Jan 10, 2014
I'm trying to check which price grids are in use using the price grid_id, and seeing whether this grid_id exists in another query that checks all active contracts. If the grid_id is present (active) I want to return 'Yes', if not I want it to return 'No'.
There are 385 price grids, but my query is only returning the 315 that are active, and ignoring any that are not used. My code is below, how I can see all the records whether Yes or No:
Select distinct
pg.grid_id [Price Grid],
pg.grid_name [Grid Name],
case when exists
(Select
c.grid_id from
customers c
inner join deltickhdr dh on dh.acct = c.custnum and dh.stage <5
where
c.type = 'C' and
dh.dticket is not null) then 'Yes' else 'No' end [Active]
From gridhdr pg inner join customers c on c.grid_id = pg.grid_id
Order by pg.grid_id
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Oct 25, 2007
I had implemented as in the link to insert or update
http://blogs.conchango.com/jamiethomson/archive/2006/09/12/SSIS_3A00_-Checking-if-a-row-exists-and-if-it-does_2C00_-has-it-changed.aspx
What i want to know is... how can i assume there are no duplicate records.
I used Distinct keyword and queried it showed me all are distint but some where i find some duplicates just don't know why i am having when i look at the data both are exactly same...
Please let me know how can i fix it.
Urgent..
Thanks
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Apr 30, 2008
I am checking to see if the source record is available in the target table using a lookup transformation and if not found i have to insert this record.
I have connected the error flow of the lookup transformation to the target. I am acheiving expected results, but is this the best practise? I have not connected to the green arrow to any task.
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Dec 17, 2007
Is there a way to structure a query to update an existing table record if it already exists, otherwise insert a new record into that table?
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Feb 9, 2007
I've decided to post this as a sticky given the frequency this question is asked.
For those of you wishing to build a package that determines if a source row exists in the destination and if so update it else insert it, this link is for you.
http://blogs.conchango.com/jamiethomson/archive/2006/09/12/SSIS_3A00_-Checking-if-a-row-exists-and-if-it-does_2C00_-has-it-changed.aspx
Thanks Jamie!
If you want to do a similar concept to Jamie's blog post above, but with the Konesan's Checksum Transformation to quickly compare MANY fields, you can visit here:
http://www.ssistalk.com/2007/03/09/ssis-using-a-checksum-to-determine-if-a-row-has-changed/
Phil
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Mar 27, 2014
I'm got a "folder" structure application which we'll be using as an in-house directory viewer. (In case you're wondering, it doesn't relate to any "real" folders, so using xp_cmdshell is out! )
Each folder and file record can have its own permissions, however these are assumed to inherit from the parent folder if no specific access rules have been set, basically in the same way file systems work. Each file record can only have one parent, and a folder can either have a parent or be at the root level.
Right now I'm having an issue with the inheritance of permissions. Say if I want to grant access to "Folder 1" to "Group A", then "Group B" shouldn't be able to see it. However, if I grant access to "File 1" in "Folder 1" to "Group B", then "Group B" should be able to see "Folder 1", but only see "File 1" and not the rest of the contents.
I thought I could do this with a CTE, but I'm having a bit of difficulty..
Here's the code:
CREATE TABLE #FileSystem (
FSIDINTEGER NOT NULL IDENTITY(1,1) PRIMARY KEY
,ParentFSIDINTEGER NULL
,NameVARCHAR(100)
,RecordTypeVARCHAR(1)-- (F)older, or Fi(L)e
[Code] ....
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May 19, 2015
Ok following scenario
create table dbo.ADAssets
(Computername nvarchar(max))
insert into dbo.ADAssets
values
('AIRLBEOF3565 CNF:4e926e06-6f62-4864-aebd-6311543d',
'AIRLBEOF3565')
So if execute the following
select Computername
from dbo.ADAssets
where Computername like
'AIRLBEOF3565%'
I get both records,but if I do this
select *
from dbo.ADAssets
where Computername in
(
'AIRLBEOF3565 CNF:4e926e06-6f62-4864-aebd-6311543d',
'AIRLBEOF3565'
)
I only get AIRLBEOF3565
So the big picture is that I need to compare 2 tables to find records that match & don't but that I get matches that shouldn't be & matches that aren't.
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Jan 8, 2008
Hey gang,
I've got a query and I'm really not sure how to get what I need. I've got a unix datasource that I've setup a linked server for on my SQL database so I'm using Select * From OpenQuery(DataSource, 'Query')
I am able to select all of the records from the first two tables that I need. The problem I'm having is the last step. I need a field in the select statement that is going to be a simple yes or no based off of if a customer number is present in a different table. The table that I need to look into can have up to 99 instances of the customer number. It's a "Note" table that stores a string, the customer number and the sequence number of the note. Obviously I don't want to do a straight join and query because I don't want to get 99 duplicates records in the query I'm already pulling.
Here's my current Query this works fine:
Select *From OpenQuery(UnixData, 'Select CPAREC.CustomerNo, CPBASC_All.CustorCompName, CPAREC.DateAdded, CPAREC.Terms, CPAREC.CreditLimit, CPAREC.PowerNum
From CPAREC Inner Join CPBASC_All on CPAREC.CustomerNo = CPBASC_All.CustomerNo
Where DateAdded >= #12/01/07# and DateAdded <= #12/31/07#')
What I need to add is one more column to the results of this query that will let me know if the Customer number is found in a "Notes" table. This table has 3 fields CustomerNo, SequenceNo, Note.
I don't want to join and select on customer number as the customer number maybe repeated as much as 99 times in the Notes table. I just need to know if a single instance of the customer number was found in that table so I can set a column in my select statement as NotesExist (Yes or No)
Any advice would be greatly appreciated.
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Dec 29, 2014
What I want to do is return a row of data when my query doesn't return a record. I have two tables:
CREATE TABLE dbo.abc(
SeqNo smallint NULL,
Payment decimal(10, 2) NULL
) ON PRIMARY
[Code] ....
So when I run the following query:
SELECT 'abc' + '-' + CAST(SeqNo AS VARCHAR) + '-' + CAST(Payment AS VARCHAR) FROM abc WHERE SeqNo = 1
UNION
SELECT 'def' + '-' + CAST(SeqNo AS VARCHAR) + '-' + CAST(Payment AS VARCHAR) FROM def WHERE SeqNo = 1
abc-1-200.00
abc-1-500.00
As you can see since 1 doesn't exists in table 'def' nothing is returned as expected. However, if a row isn't returned I want to be able to enter my own row such as
abc-1-200.00
abc-1-500.00
def-0-0.00
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Nov 3, 2014
There are many duplicate records on my data table because users constantly register under two accounts. I have a query that identify the records that have a duplicate, but it only shows one of the two records, and I need to show the two records so that I can reconcile the differences.The query is taken from a post on stack overflow. It gives me 196, but I need to see the 392 records.
How to identify the duplicates and show the tow records without having to hard code any values, so I can use the query in a report, and anytime there are new duplicates, the report shows them.
SELECT
[groom_first_name]
,[groom_last_name]
,[bride_first_name]
,[bride_last_name]
[code]....
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Feb 8, 2008
I have many tables in one database, and some of them are empty. How can I list / find (for eg. names) only non-empty tables?
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Dec 16, 2014
We have about 60 several tables with order id as a column in all of them . Every day I have to check if certain order id’s exist in the 60 tables. I just need to get the name of the table if it exists. Is there a way to dynamically keep changing the name of the table instead of having all 45 tables in the script?
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Apr 23, 2008
Hello,
I'm struggling with a query that needs to use Not Exists between two unrelated tables. I'm not sure of the best way to handle this with SQL Query Analyzer.
I have three tables, employees, courses and training_records. There is no link between employees and courses other than through the training records table. My problem is that I am unsure of how to pull all employees and an associated course id and course title when there is not a training record for that employee/course?
I had a query that would work when I specified the course id, but I wanted to do this for a list of about 25 courses.
SELECT e.empnumber, e.Nickname + ' ' + e.lastname as employeeName
FROM empdata e
WHERE NOT EXISTS (SELECT * FROM #TrainingRecords tr
LEFT JOIN #TrainingCourses tc
ON tc.ClassID = tr.classid
WHERE tc.ClassID = 1377
AND tr.employee = e.empnumber)
I then modified it to get the classid and name
SELECT e.empnumber, e.Nickname + ' ' + e.lastname as employeeName, tc.ClassID, tc.ClassName
FROM empdata e
LEFT JOIN #TrainingCourses tc
ON tc.ClassID = 1377
WHERE NOT EXISTS (SELECT * FROM #TrainingRecords tr
WHERE tr.ClassID = tc.ClassID
AND tr.employee = e.empnumber)
I then got it to work using the full list
SELECT e.empnumber, e.Nickname + ' ' + e.lastname as employeeName, tc.ClassID, tc.ClassName
FROM empdata e
LEFT JOIN #TrainingCourses tc
ON tc.ClassID in (1032, 1054, 1059, 1060, 1062, 1063, 1069, 1072, 1074, 1075, 1122, 1189, 1190, 1191, 1192, 1193, 1210, 1218, 1219, 1220, 1310, 1377, 1411)
WHERE NOT EXISTS (SELECT * FROM #TrainingRecords tr
WHERE tr.ClassID = tc.ClassID
AND tr.employee = e.empnumber)
My results seem to work like I want them to, but I have never joined a table without actually joining on a value from each table. In this case I join to a list of values and that just looks odd to me. Is this good or crappy development? Is there a better way this should be done?
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Nov 29, 2005
I have a front end inteface that adds data to tables in a SQL database.My question is:Is there an easy way of finding out what tables are affected by the update? Is there a sp_ or DBCC command that would give me the update or altered tables?
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May 19, 2008
Hi All,
How to find all the tables of a database containing a column . for example,how list all the tables of employee database having employeeid ?
Cheers,
Mathi
India.
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Oct 29, 2013
I have several tables that have the POLICY_NUMBER and POLICY_DATE_TIME in them.. All the tables with these two columns should have a POLICY_ NUMBER and a corresponding POLICY_DATE_TIME.I would like to find all tables that have POLICY_NUMBER = 123456 but do not have the corresponding POLICY_DATE_TIME..
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Jul 20, 2005
I am attempting to document a sql server 2000 based accounting system.Is there any way to see what tables a stored procedure affectswithout diving into the code?Regards,Ty
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Feb 29, 2008
Hi all,
I have the following SQL script that works fine, but I like to view all the fields for the records that are not exists in “capdb.dbo.abc “ for “capdb2.dbo.abc� table instead of some fields :
select distinct cp2abc.subj_num , cp2abc.abc_age, cp2abc.ABC_LETHARGY, cp2abc.ABC_STEREOTYPY
, cp2abc.ABC_STEREOTYPY, cp2abc.ABC_HYPERACTIVITY, cp2abc.ABC_INAPPROPRIATE_SPEECH
from capdb2.dbo.abc as cp2abc, capdb.dbo.abc as cp1abc
where not exists
(select cp1abc.subj_num, cp1abc.abc_date from capdb.dbo.abc as cp1abc where cp2abc.subj_num = cp1abc.subj_num
and cp2abc.abc_DATE = cp1abc.abc_date)
I tried cp2abc.*, but the returns entire the records in the tables.
select cp2abc.*
from capdb2.dbo.abc as cp2abc, capdb.dbo.abc as cp1abc
where not exists
(select cp1abc.subj_num from capdb.dbo.abc as cp1abc where cp2abc.subj_num = cp1abc.subj_num
and cp2abc.abc_DATE = cp1abc.abc_date)
Is there a way to accomplish this
Thanks for any help.
Regards,
Abrahim
(moved from Script Library by Jeff)
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Jul 20, 2005
Hi allIn the SP below im (trying to) do some dynamic sql. As you can see the tableto use is set as a variable and the 'exec' method used to run thesqlstatements.My problem is that the 'if exists' method is not doing what i was hoping itcould do.The @presql command returns somewhere between 0 or 50 rows (give and take) -i just want the 'if exists' part to determine if the select statementreturns something or not since i then will have to update a current row - orinsert a new one.Even if there is no rows returned, the 'if exists' command will return true:-/Any suggestions to a different way of approach...?Thanks in advance :-)######## Stored procedure start ########[various @ variables]....declare @presql varchar(200)select @presql = 'SELECT * FROM '+@CurrentDB+' where btsiteID='+cast(@SiteID as varchar(6))+''IF exists((@presql))BEGINdeclare @UpdateSQL varchar(400)set @UpdateSQL = 'UPDATE '+@CurrentDB+' SET btDate='''+cast(@FileDate asvarchar(12))+''''exec(@UpdateSQL)ENDELSEBEGINdeclare @InsertSQL varchar(2000)select @InsertSQL = 'INSERT INTO ' + @CurrentDB + '(btDate,btTime)VALUES('''+ cast(@FileDate as varchar(12)) + ''','+ cast(@ImportTime as varchar(6)) + ')'EXEC(@InsertSQL)END######## Stored procedure end ########
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Oct 13, 2005
Being fairly new to SQL and SQL scripting, I am at a loss on how to proceed on my issue.
I have a MSDE database with 2 tables that need to modified. I am changing to a standard 12 digit code in my PATIENTS table for the field sChartCode nvarchar). That code will be in the form of 110012345678. 1100 will preceed the actual 8 digit chartcode
In the PATIENTS table, the same person may be duplicated many times using vaiations such as 123456, 12345678, 012345678, 12345678 SMITH, 012345678 SMITH. For each of these records, they are linked to the RECORDS db using the field lPatientId (int).
I have already manually updated about 20K records in the RECORDS db which
takes way to many hours of time. New records will be imported at about 10K a week or so and will be over 100K soon. By the way, the SQL server is on the way.
What I am looking for is an easier way to find the records that have not been
converted in the PATIENTS db and see if they match one that has already been converted. If it has, it would need to update all records in the RECORDS db with the correct updated lPatientId and then delete the duplicate record(s) from the PATENTS db. If not, it would only need to add '1100...' to the lPatientId field.
Any help or guidance that anybody can give will be most appreciated.
Dale
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Jul 11, 2007
Hi,
I have a legacy sql 2000 database with numerous stored procedure and tables.
I need to find out the top 20 most used/accessed tables in the database
Any one know how i could do this type of trace with profiler?
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Nov 21, 2013
I have 4 particular columns (crt_dt,upd_dt,entity_active and user_idn) in many of the tables in my database. Now i have to find all the tables having four columns mentioned above and cases are
1) if the column is nullable., then it should result 'Y'
2) if the column is not nullable., then it should result 'N'
3)if column is not present., then it should display '-'
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